UD5 Toolkit
Piano Key Frequency Finder – Note to Hz & MIDI Number
Select a piano key to see its frequency in Hz and MIDI note number. Great for tuning, synthesis, or music theory exploration with interactive keyboard.
Tag: Quick Note & Scratchpad
9+ toolsSelf-Destructing Note Creator - Online Write & Burn Encrypted
Write a note encrypted with a passphrase, share the link. Once opened and decrypted, the note is deleted from browser storage. Local only.
Lunchbox Love Note Generator – Online Cute Printable Message
Generate a small printable note with an encouraging message or joke to slip into a lunchbox.
Text to Handwriting Converter - Online Realistic Pen Notes
Type notes and convert them into a realistic handwriting image with varied pen styles, ink colors, and paper backgrounds. Perfect for study notes.
Passive‑Aggressive Note Generator - Online Polite Rant
Create a note that's overly polite yet clearly annoyed. Choose a topic and get a draft. For harmless pranks.
Text to Handwriting Converter - Online Fake Handwritten Note
Paste text and convert it into a realistic handwriting image using different fonts and ink colors. Download as PNG. Fun for notes.
Voice Memo Recorder - Online Record & Download Audio
Record audio directly from your microphone and download it as a WAV file. Perfect for quick notes. No upload, fully offline support.
Custom Reminder Pad - Online Simple Alarm Notes
Write a short note and set a specific time for a browser notification reminder. Great for quick one‑offs. Local.
MIDI Note to Frequency Converter - Online Music Tuning
Enter a MIDI note number (0–127) or a musical note name and get the exact frequency in Hz. Piano keyboard picker.